Big-Tech Numbers

We overstated the market-percentage sizes of Apple, Alphabet A and C, Facebook, and Amazon.

November 4, 2017

November 4, 2017

In our Oct. 21 cover story “Breaking Up Tech,” we overstated the percentage size of four large tech companies as components of the S&P 500. Howard Silverblatt of S&P Dow Jones Indices says Apple makes up 3.7% of the market-weighted index, Alphabet’s A and C classes combine for 2.7%, Facebook is 1.85%, and Amazon 1.77%.